International
migration

The United Nations Statistics Division (UNSD) is responsible at the international level for collecting and disseminating official national data on international migration.

The United Nations Statistics Division collects statistics on international migration flows and on the stock of migrant population through the Demographic Yearbook data collection system. The collection of international migration data is shared among different institutions in order to minimise the burden on countries.

The United Nations Population
Division prepares estimates of migrant stock for each country using the data provided by the United Nations Statistics Division; undertakes regular studies on
national policies on international migration and assesses the impact of international migration on development.

United Nations Statistics Division - Demographic and Social Statistics